10 LED O2 monitor

[ae2598 at wayne.edu]

Do the analog VOMs have that low of an input impedance?  I have a radio
shack analog that uses an FET front end, it claims to have a 10M input
impedance for voltage measurement

 On Tue, 14 Nov 2000, Bruce Plecan wrote:

> 
> O2 sensor is not hardly designed to drive such a low resistance devise as a
> VOM.  Shouldn't be any less then 20K ohms per volt for reading an O2.
> 
> Best idea in not even bothering with trying to read a switching O2 other
> then >.4 rich, <.4 lean.  Other then that your just kidding yourself
> Bruce
> 
> 
> 
> >why
> > even screw around with an led display when all you need is a 0-1V analog
> > volt meter....try to find an old simpson 260 or triplett 310 VOM. it'll do
> > just fine and will probably have a better response time for that matter.
> 
> 
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